Demountable rim



C. R. HAYS DEMOUNTABLE BIM Nov. 25, 1924. 1,516,964

Filed Jan. 6. 1921 Patented Nov. 25, i924.

UNITED STATES PATENT CLAUD R. HAYS, OF CAMP HOLBIRD, Y'IARYLANEL LSSGNGR "EQ ISBN "W, WEEKS. SECRETRY OF NAR 0F UNITED AMER/TCA, THSTEE.

DEMGUNTABLE RTM.

Application filed. January 6, 192i.

Seriali No. 435,517.

To all 107mm t 77mg/ Conce/Mi:

'ie it known that l. CLAUD R. liars. chief engineer of the Experimental Unit, M. T. C., and a citizen of the United States, stationed at Camp Holabird, Maryland, have invented an improvement in Demountable Rims, of which the following is a specification.

rllie invention described herein be used by the Government, or any of its oliicers or-employees in prosecution of work for the Government, or by any other person in the United States, without payment of any royalty thereon.

ThisY invention relates to an improved demountable rim, especially adapted for use on automobile or other vehicle wheels, using pneumatic or other tires.

The object is to provide a simple, durable and inexpensive structure, in which the cost of manufacture will be reduced to the minimum, as regards the number of operations required to produce the rim, the material required for its construction both as to amount and varietyj and the number and variety of machines required for its production. All of the above tend to reduce the cost of production and increase volume production.

A further object is to provide a rim made upof a plurality of sections that are not permanently secured to each other and may be packed or .nested for shipment or storage in the minimum amount of space, and free from danger of damage in transit.

These and other objects will appear in the following detail description and be iinally pointed out in the claims.

Similar reference numerals indicated corresponding parts in all the figures of the drawings in which:

Fig. l is a side view partly in section of my improved demountable rim, showing a part of the pneumatic tire and felloe of the wheel in dotted lines.

Fig. 2 is a sectional view, showing on an enlarged scale the adjoining ends of two of the rim sections.

Fig. 3 is a plan view of the inside of the rim as shown in Fig. 2.

Fig. 4L is an edge elevation of the end of one of the sections.

Fio'. 5 is a plan view of one of the sections showing` both of its ends. and retaining` e: arranged te provide for interchangeable use of the sections.

By reference to the drawi it will be seen that the rim is made up of a ii lurality of sections of identical Constr-acti .g each section being formed of a single piece of metal that may be rolled or pressed in a single operation into form ready for use. Each section being made from a single piece of sheet metal approximately one-eighth oi' an inch longer than the segment of the rim which it constitutes and that any number of sections so shaped as to form the proper portion of the entire rim may be used, said number of sections being preferably three or more, to provide for economical packing. y

In view of the above, relating to the sec-- tions of equal length, it will be noted that each section will carry or sustain an equal, amount of strains and stresses, that the coupling means between the sections called on to sustain an equal amount of vibration and strain and therefore no portion or portions of the rim will have any greater tendency to buige or collapse than any other7 and there will be a perfect equalization of all strains throughout the entire rim, when in use on the felloe or in supporting the tire alone.

It is a well known fact that the arch formation will sustain the maximum amount of pressure but it is also fundamental that said yarch must be of equal strength throughout and have no weak spots in it, and also that the support for the arch be able to sustain all that the arch will sustain.

The above fundamental principles are found in the structure here shown, and are not found in this art as previously developed. The so-called collapsible rims are in many instances strong in some places and extremely weak in others.

rlhe similarity as to every detail. of the sections of the rim here shown makes it necessary to describe in detail, a single section only.

ln referring to the drawings by numerals,1 l indicates one of the sections of the rim, preferably three in number, each of said sections extending one-third or occupying 1200 of the 360 of the entire circle.

el i) rlhe sections l are preferably rolled or pressed from a single piece of sheet metal oi' appropriate thickness and may be provided with ianges 2 2 ot' any preferred form, for use place thereon. Said flanges .2-2 being arranged along` the edge ot the lat or base portion of the rim as shown at 8.

At the ends of each section, lugs or ears e are preferably struck from the end et the section by simply splitting` the metal to provide partly separated tongues that are bent out of line with. the base portion 3 of the rim in which they arV formed.

The ears e5.- are of such length as to provide a very rigid construction7 and extend when pressed to shape, approximately onesixteenth of an inch or more, beyond the end of the section.

lt will be seen that the ears e at the end of the sections7 which may be termed couh pling, or justifying ears are bcnu to lie in* side oi the base or flat portion of the adjoining section, and are arranged at one side of the center to provide an unobstructed space Yfor the reception ot the correspondingear forming a part of the adjoining,` section. j

In this manner a large percentage Volli the end et each section is not mutilated or other-' Wise weakened by rivets or the like and the end of the adjoiningV member is permitted to come into abutting and. registering contact and is iirmly maintained in said relative position by the ears el. Y

lWhile only one form and manner of providing and arrangin; ears i shown, it will be understood that a number of modifications would be equally eitective.

ln. the structure shown, when the parts are assembled` (see 23),' it will be seen` that the lug t on section A preventsV the relative outward displacement oi the section oi which it forms a part, and prevents the inward displacement of the end' of the abutting` section E, and at the same time the ear on the abutting section B prevents in retainingl the tire in` Lezione@ the outward displacement oit the end of mi und the relative inward movementoitv the end of l-k.

es that the ears all lie on the inner surface of the'rirnI and do not oliver any obstruction to the .seating of the securing bead at the base of the tire casing. Y

Each section may be provided with a valve stem opening at its middle to complete the interchangeability of the sections.

Slight changes in forni and'miner details ot construction may be resorted to Without. departing' from the spirit orn this invention and will be within the scope" ot its claims.

lhat l claim and desire to secure by Letters Patent is;-

"n il demountable rim consisting of a plurality of sections all provided with ears struck from both ends thereof, and bent in .in it will `be seen in this structure the same direction to receive the ends otk .djoiningl sections. Y

A demountable. rim consisting of a plurality oi"` sections all provided With ears at one side oi? their centers struck from both ends thereotl and bent in the saine manner to receive the ends of adjoining sections.

l. A demcuntable vrim consisting of a plurality of interchangeable and reversible sections provided With ears struck from the ends thereof and bent to lie onthe inside of the adjoining' section of the rimfonly. Y

ft. A demountable rim made up of a'plurality olf iin-attached sections 01"' identical conq struction tor interchangeable use, each section beingl iormed Yfrom a single piece of metal and provided With ears struck from the stock at each of its ends, said ears arranged at corresponding"distances on opposite sides of the center of the. rim and at opposite ends oi' the section7 said ears bent to lie beneath the end of a corresponding adjoining* section. to form with its ear a coupling' between the sections to prevent relative lateral movement of the ends of the section.

CLAUD R. HAYS. 

